Income Taxes (Schedule of deffered tax assets and liabilities) (Details) (USD $) In Millions, unless otherwise specified	May 25, 2014	May 26, 2013
Tax effects of temporary differences that give rise to deferred tax assets and liabilities [Abstract]
Accrued liabilities	$ 106.0	$ 154.6
Compensation and employee benefits	546.0	619.2
Unrealized hedges	0	6.9
Pension	(2.0)	112.5
Tax credit carryforwards	78.9	78.0
Stock, partnership, and miscellaneous investments	427.9	461.1
Capital losses	13.0	13.6
Net operating losses	71.4	65.1
Other	117.7	138.8
Gross deferred tax assets	1,360.9	1,649.8
Valuation allowance	221.6	232.8
Net deferred tax assets	1,139.3	1,417.0
Brands	1,373.4	1,380.4
Fixed assets	499.4	537.4
Intangible assets	204.2	168.3
Tax lease transactions	53.1	55.1
Inventories	60.6	52.0
Stock, partnership, and miscellaneous investments	470.7	456.7
Unrealized hedges	22.8	0
Other	45.0	28.2
Gross deferred tax liabilities	2,731.2	2,678.1
Net deferred tax liability	$ 1,591.9	$ 1,261.1